Hydraulic type bark-removing machine having nozzle adjustable about two spaced horizontal axes



y 3, 1950 H E. BUKOWSKY 2,508,594

HYDRAULIC TYPE BAlK-REMOVING MACHINE HAVING NOZZLE ADJUSTABLE ABOUT TWO SPACED HORIZONTAL AXES Filed Dec. 3, 1945 4 Sheets-Sheet l INVENTOR.

HARRY E. BUKOWSKY ATTORNEY y 3, 1950 E. BUKOWSKY 2,508,594

HYDRAULIC TYPE K-REMOV G MACHINE HAVING NOZZLE ADJUSTABLE ABOUT TWO S ED HORIZONTAL AXES Filed Dec. 3, 1945 4 Sheets-Sheet 2 Illii lull ' INVENTOR. HARRY E. BUKOWSKY ATTORN EY y 3, 1950 H. E. BUKOWSKY 2,508,594

HYDRAULIC TYPE BARK-REMOVING MACHINE HAVING NOZZLE ADJUSTABLE ABOUT TWO SPACED HORIZONTAL AXES Filed Dec. 3, 1945 4 Sheets-Sheet 3 INVENTOR.

HARRY E4 BUKOWSKY ATTORNEY y 3, 1950 H. E. BUKOWSKY 2,508,594

HYDRAULIC TYPE BARK-REMOVING MACHINE HAVING NOZZLE ADJUSTABLE ABOUT TWO SPACED HORIZONTAL AXES 4 Sheets-Sheet 4 Filed Dec. 3, 1945 INVEN TOR HARRY E. BUKOWSKY ATTO RNEY Patented May 23, 1950 UNITED STATES PATENT OFFICE HYDRAULIC TYPE BARK-REMOVING MA- CHINE HAVING NOZZLE ADJUSTABLE ABOUT TWO SPACED-HORIZONTAL AXES Application December 3, 1945, Serial No. 632,296

1 Claim.

This application is a continuation in part of my pending application, Serial No. 471,260, filed under date of January 4, 1943, and similarly entitled Hydraulic log-barking machine, now U. S. Letters Patent No. 2,395,845, dated March 5, 1946.

An object of the present invention is to provide an improved hydraulic log-barking machine which can be used for logs of a wide range of diameters and in which the nozzle jet will strike the log surface approximately at a desired predetermined angle regardless of the size of the log.

A further object of the present invention is to provide a hydraulic log-barking machine in which adjustments in the position of the nozzle jet with respect to the log surface can quickly and easily be made, should this be found desirable.

In the accompanying drawings:

Fig. 1 is a fragmentary side elevation of my machine;

Fig. 2 is a fragmentary cross section taken on line 22 of Fig. 1, but drawn to a larger scale;

Fig. 3 is a fragmentary cross section similar to Fig. 2 but illustrating the debarking nozzle adjusted to a different position so as to enable the nozzle jet to strike the log at a diflerent angle;

Fig. 4 is a similar sectional view illustrating the use of the machine with a log having an exceptionally rough and irregular surface;

Fig. 5 is a similar view illustrating the nozzle in another position; and

Fig. 6 is a diagrammatic figure illustrating how any desired nozzle jet direction will be maintained on logs of different diameters.

The log L (Fig. 1), after being properly positioned in my machine (by suitable means not shown), is supported at its ends by spur centers 10 and H carried on the ends of rotatable spindles, the spindles being mounted in thrust and radial load ball bearings. One of said spindles is carried in a slidable support [2, which is adjusted longitudinally with respect to the log. The other spindle is connected to driving means (not shown) whereby the spindle, and therewith the log, will be rotated at any desired speed.

The machine includes a rigid top frame 13 on which a carriage I 4 (Figs. 1 and 2) is slidably mounted. Suitable means, such as a sprocket chain l5, connected to the carriage and operated by sprockets and gears, preferably arranged as described in my co-pending application, Serial No. 471,260 (now U. S. Patent No. 2,395,845), with suitable clutches and controls, causes the carriage to travel longitudinally with respect to the log.

The carriage l4 (Fig. 2) has a downwardly extending bracket 16 at one side to which a nozzle arm 11 is pivotally attached. This nozzle arm I! consequently moves up and down in a plane normal to the axis of rotation of the log. On the opposite or free end of the arm I! a nozzle I8 is mounted. The nozzle 18 is pivotally supported on the arm I! at [9 and carries a clamping screw 20, which passes through a curved slot 2| in the arm 11, by means of which the nozzle may be secured in different positions of angularity with respect to the log surface at any fixed position of the arm ll.

A guard or shoe 22, attached to the arm I! by bolts 23, has a rounded bottom surface, as shown in Fig. 2, so that, if desired, the guard or shoe can ride on the surface of the log regardless of the direction of rotation of the log. The shoe also protects the nozzle tip from any possible inadvertent contact with the log.

The nozzle I8 is connected by means of a suitable hose 24 to a pipe line 25. The pipe line 25 includes sections connected by swivel joints as described in the above mentioned U. S. Patent No. 2,395,845. Water under hydraulic pressure is delivered through the pipe line and hose to the nozzle l8 and causes a debarking jet to be discharged from the nozzle tip.

A branch lever arm 25, integral with the arm 11, extends upwardly, as'shown in Fig. 2, and is connected at its upper end to a pair of links 21 which in turn are connected to a guide block 28 attached to the end of a, sliding bar 29. The guide block 28 slides on a guide rod 39, and the sliding bar 29 slides in a. support 3|. A compression spring 32 is mounted on the sliding bar 29 and is held under compression between the support 3| and a washer 33, the washer in turn bearing against a pin 34 in the bar 29. A hydraulic cylinder 35, mounted in the carriage 14, has a piston rod 36, the outer end of which is enlarged and which bears against the end of the sliding bar 29. A suitable piston within the hydraulic cylinder 35 is connected to the piston rod 313 and a control valve and ports (not shown) at the ends of the hydraulic cylinder enable the piston rod 36 to be moved in either direction as desired. 7

From Fig. 2 it will be apparent that when the piston rod 36is moved to the right (as viewed in Fig. 2) the free end. of the arm I1, and with it the nozzle 18, will be raised. The raising of the arm ll, however, will increase the compression of the spring 32. If the arm I! is so positioned that the guard or shoe 22 rides. on. the surface of the log, the spring 32 will hold the guard against the log surface but will nevertheless permit the guard and arm to be pushed upwardly if this is required by. the irregularity of the log surface. The spring 32 should'of' course 'be strong enough to prevent the armt'l' from being pushed upwardly by the reaction or kick-back which would ordinarily be produced: by the. discharging of the debarking jet from the nozzle,

especially if the nozzle is positioned as shown in Figures 3 and 4. Insteadof the combination of the hydraulic cylinder 35' and compression" nozzle tip and associated parts if the nozzle should accidentally come into contact with a protrusion, such. as a knot, on the log surface.

Various modifications within the scope of my invention could be made in the device which I have shown. It is not my intention to limit my invention otherwise than as stated in the claim.

I'cl'aimii In a hydraulic log-barking machine, means for supporting a log for rotation, a carriage movable in a planepar-allelto the rotational axis of the log, means for rotating the log, means for moving ,said carriage'longitudinally of the log, a nozzle- 7 carrying arm pivotally mounted on said carriage spring 32 which I use for positioning'the. arm

for movement ina plane substantially normal to the rotational axis of the log, a debarking nozzle adjustably mounted on said arm and movable, about an axis parallel. to'said rotational axis, means. on said, arm and nozzle to secure said nozzle in any. selected position of adjustment said. nozzle connected with a source of rangement. is. rotated-scounter-clockwise, as indi cated. by the arrow X.; a

In. Fig. 3., the. nozzle l8=is shown in another positionso that the. jet. isdirected differently and the log isrotated inclockwise direction. Fig. 5 illustrates.stillfanother position. of the. nozzle and. nozzle. jet? For different. types or kinds. of logs. it. may be desired. to change the. angle of impingement. of the nozzle. jet with respect to thelogssurface, and in=such case. this canleasily be done. by means. of. the clamping; screw 24-. However, with the nozzle clamped in. a, predetermined desired position the angle. of impingement of the'jet: with respect to the. log surface w-illcbesubstantiallythe same regardless of the log; diameter, due to; the .fact the pivotal mounting, of. the arm. l1. and. the. nozzle tip are located in diiierent quadrants. e This is. diagrammatically illustrated. in Fig.- 6 in which 40, 4| and- 42 indicate logs of difierent diameters, and 43 indicates the pivotal. point of the nozzle-carrying arm. For any fixed position of the nozzle on the: supporting arm the center line of. the no zzle. jet, indicated by the lines 44, 45v and. 46-, will be. a tangent to an imaginary circle. with 43 as its. center, such as. thecircle 41. It. will bepapparent that the angles which the lines 44, 45 and 46 make with the. tangents to the'circles 40, 4| and 42. respectively, thus the angles, a, b and c aresubstantially the. same.

water. under pressure, said nozzle having a tip discharging a jet downwardly and located. a'djacentthe axis about which said nozzle. can. be adjusted, whereby adjustment of the nozzle changesthe directionof a jet of water discharging from said. tip but does-not appreciably change the distance between said. tip and the log means associated. with said arm. for moving said arm on'its pivotal mountingandthereby positioning said nozzle tip at any desired distancefrom the surface of a log in said machine, the pivotal mounting of saidarm and the discharging tip of: said nozzlebeing located over opposite sides of the log, whereby-a selected nozzle'jet direction with respect to the log surface is automatically maintained for logs of various diameters.

HARRY E. BUKOWSKY.

REFERENCES CITED.

r The following, references are of record in the file of this patent: V

UNITED STATES PA I'ENTS Date Number Name 871,296 Russell et al. Nov. 19,1907 1,300,748 Lombard Apr. 15, 1919 1,969,914 Swigert. Aug. 14,1934 1,986,708 Bezner Jan. 1,1935

2,328,545 Bukowskyn, .Sept. 7,,11943 2,395,845

Bukowsky Mar. 5, 1946 

